The Sydney-based Daily Telegraph accidentally printed two pages of the Sydney Morning Herald.

One of Australia's most popular tabloids has blamed a printing error after pages from a rival newspaper appeared in its Thursday edition.

The Sydney-based Daily Telegraph accidentally printed two pages of the Sydney Morning Herald, reports the BBC.

The pages include a letter calling for action to tackle climate change.

The Telegraph has apologised for the mistake and said it happened during the production process.

Good morning readers, today @DailyTelegraph printed 2 pages from The Sydney Morning Herald in some editions. Both papers share the same printing facility in Sydney's west and the error happened during the production process. We apologise for any confusion this has caused. pic.twitter.com/PzGSeLjlmH